1995

3.2

1971

1.0

2006

5.2

1970

5.7

1974

1.5

1980

7.5

1981

0.0

1973

6.4

1971

4.4

1968

4.9

2005

3.0

1989

4.5

1985

3.8

2016

2.0

2000

3.6

1980

2.0

2012

2.3

2014

5.1

2007

5.8

1983

6.6